private void btnPreferences_OnClick(object sender, EventArgs e)
        {
            Form fcbp = new frmClipBoardPref();

            fcbp.Show();
            LoadPrefs();
        }
        // preferences

        private void button1_Click(object sender, EventArgs e)
        {
            if (cbp == null)
            {
                cbp = new frmClipBoardPref();
            }
            cbp.MyParentForm = this;
            cbp.Show();
        }